Triangular resin tank for a water softener



FIG. 1 is a perspective view of a triangular resin tank for a water softener showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken line portions of the figure drawings are included to show unclaimed subject matter only and form no part of the claimed design. 

The ornamental design for a triangular resin tank for a water softener, as shown and described. 